html,body{
    font-family:PingFangSC-Medium;
}
#nav ul {  
    list-style: none;  
    margin-left: 50px;  
}  

#nav li {  
    display: inline;  
    line-height: 40px;  
}  

#nav a {  
    text-decoration: none;  
    padding: 20px 20px;  
} 
#nav .active{
    background-color:#1E9FFF;
    padding: 5px 8px;
    color:#fff;
}

/*题目展示*/
.topic-title-list{
    width:240px;
    font-size:32px;
    font-family:PingFangSC-Semibold;
    color:rgba(0,0,0,1);
}
.topic-title{
    font-size:24px;
    font-family:PingFangSC-Medium;
    color:rgba(68,74,90,1);
    line-height: 30px;
}
.topic-desc{
    font-size:16px;
    font-family:PingFangSC-Medium;
    color:rgba(204,204,204,1);
    line-height: 20px;
}
.topic-item{
    height: 100px;
}
.topic-time{
    font-size:16px;
    font-family:PingFangSC-Medium;
    color:rgba(83,199,202,1);
}
.topic-desc-write{
    font-size:16px;
    font-family:PingFangSC-Regular;
    color:rgba(153,153,153,1);
    line-height:40px;
    width:670px;
    background:rgba(250,250,250,1);
}
.dn {
    display: none;
}
.type-hide {
    display: none;
}
.db {
    display: block;
}
.article-show-div{
    padding-left: 0.2rem;
    padding-top: 0.5rem;
    font-size: 0.18rem;
    color: rgba(153, 153, 153, 1);
    font-family: Georgia;
    position: relative;
}
.article-show{
    padding-right: 0.2rem;
    margin-bottom: 0.3rem;
    width: 375px;
    margin: 0 auto;
}
.question-div{
    margin-bottom:20px;
}
.question-show-head,.question-show{
    margin: 0 auto;
    width: 375px;
}
.question-show-head{
    font-size:22px;
    font-family:PingFangSC-Medium;
    text-align: center;
    margin: 20px auto;
}
.question-show{
    font-size:18px;
    font-family:PingFangSC-Regular;
    color:rgba(153,153,153,1);
    line-height: 24px;
}
.question-show-head-part{
    margin: 0 auto;
    width: 375px;
    text-align: left;
    font-size:16px;
    font-family:PingFangSC-Medium;
    margin-bottom: 20px;
}
.question-show-topic{
    font-size:28px;
    font-family:PingFangSC-Semibold;
    color:rgba(0,0,0,1);
    margin-bottom: 20px;
}
.question-title{
    font-size:24px;
    font-family:Georgia-Bold;
    color:rgba(68,74,90,1);
}
.question-value{
    margin-bottom: 30px;
}

.question-show-list{
    border: 1px solid;
    padding: 20px;
}

.question-show-list .question-title{
    margin-bottom: 10px;
    text-align: center;
}
.mb20{
    margin-bottom: 20px;
}
.question-li-del{
    cursor: pointer;
}

/*批改*/
.correct h2{
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 18px;

    color:rgba(68,74,90,1);
}
.correct h1{
    width:92px;
    font-size:24px;
    color:rgba(0,202,203,1);
    line-height:33px;
    margin-left: 33%;
}

.correct{
    margin-bottom: 10px;
}
.correct-question{
    margin-top: 30px;
}
.clearboth{
    clear: both;
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.correct-containt{
    width: 375px;
    margin: 0 auto;
    font-size:16px;
    line-height:22px;
    color:rgba(153,153,153,1);
}
.listening{
    cursor: pointer;
    display: block;
    width:180px;
    height:32px; 
    background:rgba(83,199,202,1);
    border-radius: 100px ; 
    margin-top: 15px;
    padding-top: 10px;
    text-align: center;
}
.writing{
    cursor: pointer;
}